Lock



Sept. 27,- 1932. F. LEEB- 1,879,350

Sept. 27, 1932. F; LEEB 1,879,350

LOCK

Filed Aug. 6, 1951 2 Sheets-Sheet 2 Patented Sept. 27, 1932 .Pm-:Nro

mmm; LEEB, or ctrtvnny CITY, jcAYLIroJaNIn'Y TES Loox.

Application filed August 6193. Serial I-o. 555,569. L

This inventionrelates to locks andhas for its general object theprovision of a simple and inexpensive lock, which may be easily manufactured and installed', and

which is particularly adapted for, although not limited to, use in connection with closures such as screen doors, vehicle doors and deck Closures, cupboards, "desk orV `cabinet drawers, or the like'.

Another object of invention is the provision, in a lock of this type, of a novel combination of bolt and actuating mechanism whereby these elements may be quickly and easily disposed and retained in dead-locked,

spring locked, and retracted positionsat will.

In the attainment of these objects, myiinactuating nut-or rollbackwhiclifis 'in turn operated by a lockcylinder which is adapted to be released and rotated by means of a key, thus dispensing with the usual lmob and spindle. Y

In another embodiment, there is provided a locking device which is adapted to function in connection Vwith a closure fastener in which a lmob is employed, and, in any of the devices described, there may beused ya tumbler cylinder which is operable from either side of the closure by means of a symmetrically notched key. Y,

Other objects and features of'novelty will be apparent from the following specification when read in connection with the accompanying drawings, in which certain embodiments of my invention are --illustratedjby way of example.

In the drawings: .l Figure lis a plan view of a lock e rbodying the principles of the invention with vthe cover plate removed and certain .portions shown in vcross section, the bolt being in deadlocked position;

Figure `2 is a similar view showing the elements in retracted positions, a portion Vof the cover plate being `illustrated' in the forward end of theclock; L

Figure 3 is a fragmentaryelevational view of the'forwardiend of the lock lshowing a Y portion of the bolt' in [extended position;

Figure ,4f is a view in vertical cross vsection taken substantiallyon line 1 -4 of Figure l and also showing thecover' plate;

Figure' is a cross sectional view taken on linef-V of Figure4; i

- -Figure is a fragmentaryplan view showing a modified forni of the'bolt controlling spring mechanism; Y u v i Figure 7 's a viewisimilar to Figure illustrating a' modified 'means for keying the lock cylinder to the'bolt actuating nut; 4 FigurefS is a perspective View Of the actuating nut employed in the embodiment illustrated in Figures 1 46 inclusive. f v

Figure 9 is a planview similar to Figure 1 of another embodiment of myinventionf; and

Figure 10 is a vertical cross sectional View ltaken on line 1 0-10 of Figure 9.

Referringto the drawings,it will be that my improved lock comprises a casing l consisting of the member 10 formed of a base plate 11 provided with marginal sideflanges 12 and end flanges 13 adapted to extend preferably at rightangles from the base plate manner at the corners 14. A similar flange 15 is turned upwardly from the base plate 11 at the,forwardedgetliereof,to'form a face plate adapted to be setfinzthe edge ofthe door brother closure to which the lock isapplied ,It will-be noted that'the face' plate 15is adapted tov extend fora short distance on either side of tliebod'y portiono'fthelock of'the'sidejfianges 12 are spaced from the' face plate 15 so as to provide slots 18 fora ,purpose laterto be described. IThe face plate 15l is, `"of course, provided witha suitable opening `19fthro'u'gh whichtlie'n'ose portion 2O ofthe vbolt 21l is adapted'to,project.V The lockjcasingffurther `comprises a cover memberf23 which is provided with afforward flange 2 4 which: is adapted tofitclo'sely bejhindthe face plate 1,5V as shown in F-igure 2 of the drawings, and'is adapt'edt'o 'extend 11 and t'obe integrally united in any suitable' through the slots 18 provided between the ends of the side flanges 12 and the face plate the oppositely directed portions and 31 and I the spaced parallel rearward extensions 32 and 33. These extensions 32 and 33 are prof vided with the recesses 35 in the ends thereof which are adapted to receive the forward ends of the coil springs 36, the opposite ends of which are adapted to abut the rear wall 13 of the casing and to be retainedas by means of the pins 37. These springs are for the purpose of' exerting equal pressures upon the ends of the bolt arms so as to continuously urge the bolt toward the engaged position shown in Figure 1. In Figure 2 the bolt is shown retracted against the tension of the springs 36. A projection 40 is formed on the inner side of the rearward extension 32 of one of the arms and is provided with the cam engaging surface 41.

For the purpose of providing a pivot for the actuating mechanism of the lock, a cylindrical boss is rigidly secured to and adapted to project upwardly from the base plate 11 of the casing. The boss 45 is provided with the cylindrical opening or bore 46 which may pass entirely through the boss and also through the base plate 11. An actuating nut or rollback 48 is provided with a hollowV hub or body portion 49v which is adapted to fit rotatably around the boss 45. In the embodiment shown in Figures 4 and 8 of the drawings, the rollback 48 is provided with the sleeve 50 which is of smaller diameter than the hub portion 49 and which is adapted Vto overlie the upper rim of the boss 45. This narrowed or shouldered portion'() is provided with the notches 51 in the upper margin thereof which are adapted to receive portions of the operating means hereinafter described.

The rollback 48 is provided with a single lobe cam 53 which is provided with the Curved end surface 54 and the nos'e55. As

illustrated in Figure 1, in which vthe partsv are in dead-locked positions, that is, the position in whichV the bolt cannot be retracted so as to permit the closure to be opened, the curved surface 54 is disposed in close proximity to the rearwardly facing surfacej57 of the bolt 21. In order to move the bolt rearwardly to the retractedy position shown in Figure 2 of the drawings, the rollback 48 53 moves along the cam engaging surface 41 of the projection 40 carried by the arm portion 32 until the various elements assume the positions shown in Figure 2, in which the nose of the cam has passed over the slight shoulder 60 formed in the surface 41 the nose 2O thereof with the keeper secured to the amb of the door (not shown) the rollback -48 is rotateduthrough an angle of 90 counterclockwise from the dead-locked position tothe position shown in Figure 6 of V the drawings wherein the cam will not obstruct the rearward movement of thev bolt. As will be readilyunderstood, in thisposition, the bolt will' automatically latchwith the keeper upon the mere "closing of the door vor other closure. i

If desired, means may be provided for re- Asiliently retaining the rollback in any of its 'rotated operative' positions such as those' shown in Figures l, 2 and 5 respectively. In the illustrated embodiment of the invention, this means takes the form ofthe telescopin-gabutment 63`comprising the portion 64 which is secured to the rear wall 13 of@ .exterior surface of the hub 449 ofthe rollback 48 and are adaptedto be engaged by the plunger 65 when the rollback 48- is in retracted, dead-locked and spring locked positions, respectively. F lattened surfaces 67, 6.8 and 69 are joined by the rounded portions 70 of the rollback which contact with' the plunger 65 in changing from one position to another;

'The preferred Lmeans for operating the rollback 48 comprises the lock cylinder 72 'which includes the cylindricalbarrel portion 73 andthe outer enlarged portion 74.

`The cylinder 7 2,`in the embodiment villustrated in Figures 4 and 8 ofthe drawings, is`

provided witlrthe projections ,75y which are adaptedto interlockwith the notches 51 of the rollback so that the cylinder androllback are connected for movement as a'unit.

lit

Thebarrel portion 73 of the lock cylinder is vretained within the bos's`45' by any suitable means, the preferred form of which comprises'` the ,collar 771which is 'securedto the end of the barrel 73 which is adapted to project through the lock casing, by means yof a 1,879,350 j j l 23 withthe rollback 48 :and boss 45. The lock Azo cylinder 72 may be provided with suitable means for retaining it in adjusted position with respect to the casing, such as the tumblers 80, the ends 81 of which are adapted to enter one of the slots 82 `formed in the inner wall of the boss 45. The tumblers are adapted to be urced outwardl into engagementl b b C with these slots as by means of the small coil springs 84 which are adapted to exert pressure upon the projections 85 of the tumblers. A key 87 is adapted to be inserted. in the key hole 88 provided in the lock cylinder for the purpose of releasing the'tumblers from engagement with the slots and also for the purpose of rotating the cylinder and its associated rollback 48 for operating the lock bolt. l-Vhen therollback 48 and the lock cylinder 72 are rotated to any of.y the three operativey positions described, removal of the key from the key .hole 88 of the lock cylinder permits the ends 81 of thetumblers 80 to enter that one of the slots 82 vwhich correspondsto the positionchosen. It will be noted that four of these slots 82 are provided for the purpose Vof receiving the tumbler projections 81 in either of the two possible positions of application of the cylinder to the rollback 48 as permitted by the alternative opposite engagements of the projections V75 in the slots 51. Y p

In Figure 6 of the drawings, there is illustrated a modication of the spring means for urging the bolt toward engaged position. In this embodiment, instead of employing the coil springs 36, a single leaf spring 90 is used, the ends of'which are adapted to engage behind the ends of the arms-32- and 33 of the bolt kand, the central'portion of which. is adapted to fulcrum `against the front surface 91 of the abutment 92. f

kn-alternative means for connecting the lock cylinder 72 with the rollback 48 is shown in Figure 7 of the drawings. In this embodiment, the projections 75 and slots or notches'51 are. omitted and the interior of the sleeve50 of the rollback 48 is provided with a key-way 95 iinto which the key 96 formed on the barrel 73 of the locking cylinder 72 is adapted to be inserted.` Y

`In the modification illustrated in Figures 9 and 10. of the drawings, the lock casing is indicated by the numeral and is provided with a face plate 101 and a cover plate 102.

he bolt 103 is provided with a beveled nose 104 similary to that in the previously described embodiments, but the rear portion of the bolt is of a different construction. Upon the upper portion of the rea-r part of the bolt there is provided the pair'of rearwardly extending arms 105 and 106, each of which is'provided with an upstanding lug 107. Y The arms 105 and 106 are adapted to straddle the hub 108 of `the rollback which is provided witlrthe double camn110. Y The rollbackYV is adapted vto be rotated by means of knobs disposed upon either side ofthe lock and carried by the shaft 111.A 4It will be readily understood how a rotation of the knob will causethe rollback cam 110 to'abut the lugs 107 and move the bolt 103 :rearwardly to unlatch the bolt. Y

An upstanding hollow projection or boss 113 provides means 4for guiding the move- `ment of the bolt 103 Vby cooperation with the slot 114 formed-therein,` and also, the internally threaded central portion 1.15 thereof provides means for receiving a screw for fastening-the cover plate on the lock casing. The bolt 103 is-provided with the laterally extending arm 118 which is provided with Y round the upper end of the :.boss1123, which' is securedby anysuitable means to the bot- Y i tom of the casing 100' as in-the previously described embodiments. A tumbler locking cylinder 125 is adapted to extend through Y the hollow boss 123 and is provided with the projections 126 which are adapted to enter notchesor keyways 127 suitably formed in the sleeve122 whereby the cylinder anddog 121` are adapted to move in unison. Inthis case the cylinder is adapted to extendall the Way through the lock casing and isprovided with an enlarged portion 128 at one end and a similarlyformed sleeve 129is` secured to the other end of the cylinder in'order to retainit in operative position.y Y

In the Vposition,illustrated in Figure 9, the dog 121isiin dead-locked position VVbut may be rotated through a quarter turn ina clockwise direction so asto permit rearwardV movement ofthe bolt 103. It is obvious that if the casing 100 were made wider, provisioncould ,be made for the rotation Vof the dog 121 in ay counterclockwisedirection also in order to release the bolt. -J ust as in the embodiments previously described, the boss 123 is in ternally provided with slots 130, preferably at intervals of 90 around its periphery, for the engagement of the tumblersof the cylinders in order to retain the cylinder4 and its associatedV locking nut in any one of itsl positions-when the key is withdrawn. f

`One feature of this modification, which, of course, Vmay be embodied'in any-of the Vvlocks previously described, is the provision of means to enable the lock to be operated from either side of the closure with'the same key. The keyslot is indicated at132 and the tumblers thereinare arranged symmetrically 'on each side of the mid-point. of the cylinder. Similarly,the notches in the key. I

are symmetrically arranged from' theircenter of the operative portion ofthe `key toward eitherend thereof. This vfeature is already well known in the art and does not forma part of the present invention, except as modified by the arrangement of the other elements of the device as claimed.

In order to constantly urge the bolt toward extended position, a leaf spring 135 is provided, the end 136 of which is adapted to bear against the rear surface of one of the lugs 107. The curved lower end 137 of the spring 135 is adapted to lie against aportion of the boss 123 and an intermediate portion of the spring is adapted to fulcrum against a pin 138.

It will be understood that various changes and modifications may be made in the embodiment illustrated and described herein without departing from the scope of the invention as defined by the following claims.

, Having thus described the invention, what is claimed as new and desired to be secured `by Letters Patent is:

' 1. Ina lock of the class described, in combination, a spring pressed bolt provided with two spaced parallel rearwardly extending arms, a rollback rotatably mounted between said arms, a projection on said rollback, means associated with one of said arms adapted to cooperate with said projection to retain the bolt in retracted position, an intermediate portion of said bolt connecting said arms and adapted to cooperatewith said projection to retain said bolt in dead-locked position, said rollback adapted to be rotated so that said projection is directed toward the other of said arms to free said bolt for springlatch operation.V

2. In a lock of the class described, in combination, a spring pressed bolt provided with two spaced parallel rearwardly extending arms, a rollback rotatably mounted to operate between said arms, a single cam on said rollback, an inwardly curved surface on the `side of one of said arms against which said cam is adapted to move to retract said bolt, a relative slight shoulder formed on said curved surface, a nose formed on said cam and adapted to releasably engage said shoulder to retain said bolt in retracted position, a rearwardly facing surface on said bolt between said arms adapted to abut said cam when said cam is directed forwardly, where'- by said bolt is held in dead-locked position, said cam adapted to be turned toward the other of said arms to free the bolt for spring latch operation.

3. In a lock of the class described, in combination, a casing, a spring pressed bolt provided'with a pair of spaced, parallel, rearwardly extendinfr arms, a-rollback rotatably mounted in said casing between said arms, and adapted to be rotated to a plurality of positions with respect to said bolt and said arms for the purposes of dead-locking, retracting and releasing the bolt, a plurality of--flat surfaces onsaid rollbackeach corresponding to one of said positions a plunger adapted to engage said surfaces to retain the rollback in said rotated positions, and a coiled spring for urging said plunger toward said rollback.

4. In a lock of the class described, in combination, a casing, a bolt provided with a pair of spaced, parallel, rearwardly extending arms, recesses in the rear ends of said arms, coil springs seated in said recesses and adapted to abut a wall of said casing to urge said bolt toward engaged position, a rollback rotatably mounted in said casing between said arms, and adapted to be rotated to a plurality of positions with respect to saidA bolt and said arms for the purposes of deadlocking, retracting and 'releasing the bolt, a plurality of flat surfaces on said rollback each corresponding` to one of said positions, a plunger adapted to engage said surfaces to retain the rollback in said rotated positions, and a coiled spring for urging said plunger toward said nut.

5. In a lock of the class described, in combination, a casing, a spring pressed bolt associated with said casing and provided with a pair of spaced, parallel rearwardly extending arms, a cylindrical boss within said cas ing projecting from one wall thereof and disposed substantially centrally of said casing sopas to lie between the arms of said bolt, a rollback rotatably mounted on said boss, a single lobe cam onsaid rollback adapted to contact with one of said arms to retract.

said bolt, to Contact with a portion of said bolt between said. arms to hold said bolt in dead-locked position, and to 'be directed toward the other of said arms to release said bolt for springlatch operation, said boss bev ing provided with a central bore in the walls of which are formed tumbler receiving slots at intervals spaced according to the relative spacing of the three cam positions described,

a lock cylinder disposed in said bore and, having a portion thereof keyed to said actuating nut, key retracted tumblers provided in said lock cylinder and adapted to be pro- -jec-tedV into the slot corresponding to the operative position to which said rollback is turned,` whereby said cylinder and consequently said rollback may be locked in said rotated positions.

6. Ina lock of the class described, in combination, a casing, a bolt, a boss projecting within said casing from one wall thereof, a locking dog carried by and freely rotatable with respect to said boss, avcam on said nut adapted to be moved to dead-locked position with respect to saidV bolt, a central bore formed in said boss, the wall of which is provided with symmetrically spaced keyways, a lock cylinder operatively connected with said dog and provided with tumblers adapted to selectively engage in said keyways-'to lock said cylinder and consequently said dog in rotated positions for dead-locking and releasing said bolt, said tumblers being symmetrically arranged from the center of said cylinder outwardly toward each end thereof, whereby Aa similar correspondingly Y shaped key maybe employed to actuate said lock from either side of the closure.

' In testimony whereof I hereunto aix my signature.

FRANK LEEB. 

